WAUSAU — Three men were charged in Marathon County court Monday with an array of charges filed in connection with a Friday online child-sex sting.

The undercover sting — Operation KG Initiative — targeted online predators trying to make unsupervised contact with underage victims, according to a Marathon County Sheriff's Office news release. Each of the three men responded to a Craigslist ad and arranged to meet with what they believed to be a 14-year-old girl in Wausau, according to court documents.

Nicholas Gosh, 18, of Stevens Point, faces one charge of using a computer to facilitate a child sex crime, according to court documents. Authorities said he agreed to meet an undercover officer posing online as a 14-year-old girl at an apartment on the 200 block of West Strowbridge Avenue, where he was arrested. Gosh was released on a $1,000 signature bond Monday in Marathon County Circuit Court.

Bo Waalkens, 19, from Kaukauna, is accused of attempting to smoke marijuana with the fictitious 14-year-old girl, according to court documents. He asked the girl if she was "up for smoking" but also said he could not touch her for fear he could go to prison, according to court documents. Waalkens was arrested at about 5:20 p.m. Friday and faces charges of contributing to the delinquency of a minor, possession of marijuana and possession of drug paraphernalia. Waalkens was given a $1,500 signature bond Monday at Marathon County Circuit Court.

Justin Hetzel, 32, of Pittsville, arranged to meet the fictional 14-year-old girl at a Rib Mountain fast-food restaurant, according to court documents. Officers did not see the vehicle Hetzel said he would arrive in, but instead saw a blue car parked near the restaurant and facing the direction the girl told her he would be coming from, according to court documents.

Officers determined the license plates of the car belonged to Hetzel and pulled up next to it to talk to Hetzel, who agreed to let police see his phone, according to court records. Hetzel, who said he was waiting to meet a friend for a trip up north, then grabbed the phone out of an officer's hand and snapped it nearly in half, according to court documents. He was wrestled to the ground by several other officers at the scene and arrested on charges of using a computer to facilitate a child sex crime, child enticement and resisting arrest. Hetzel was ordered to pay $3,000 of a $10,000 bond, and as of Monday afternoon had not posted the cash.

Operation KG Initiative was named in honor of Sheriff's style Lt. Kevin Gray, who died in July from complications from a motorcycle crash. Gray was instrumental in arranging previous stings targeting internet crimes against children, including teaming up with Wausau Police Department and building a forensic lab to conduct future operations, according to the news release. Detectives from both agencies took part in Friday's sting.